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Garden Zucchini Casserole baked golden‑brown in a casserole dish topped with crispy breadcrumb and cheese crust.

Easy Garden Zucchini Casserole Recipe

A comforting, cheesy garden zucchini casserole baked to golden perfection—easy, family‑friendly, and freezer‑ready.

  • Total Time: 45 minutes
  • Yield: 6 servings 1x

Ingredients

Scale
  • ½ cup chopped onion
  • 1 Tbsp olive oil or butter
  • ½ tsp garlic powder
  • 4 cups zucchini, sliced (about 23 medium)
  • ½ tsp dried basil or Italian seasoning
  • Salt & black pepper, to taste
  • 2 large eggs
  • 1 cup shredded cheddar cheese
  • ½ cup grated Parmesan cheese
  • ½ cup sour cream or Greek yogurt
  • ½ cup breadcrumbs (for mix)
  • ½ cup breadcrumbs (for topping)
  • 2 Tbsp melted butter (for topping)

Instructions

  1. Preheat oven to 375 °F (190 °C). Grease an 8×8‑inch baking dish.
  2. In a skillet over medium heat, sauté zucchini and onion in olive oil until tender (5–7 min). Season with garlic powder, basil, salt, and pepper. Let cool slightly.
  3. In a large bowl, beat eggs. Stir in sour cream (or yogurt), cheddar, Parmesan, and ½ cup breadcrumbs. Fold in the zucchini mixture.
  4. Pour into prepared dish. Combine remaining breadcrumbs with melted butter and sprinkle on top.
  5. Bake uncovered 25–30 minutes, until golden and set. Let cool 5–10 minutes before slicing.

Notes

  • Salt and drain zucchini to avoid soggy casserole.
  • Panko breadcrumbs add extra crispiness.
  • Make‑ahead: assemble and refrigerate up to 24 hrs before baking.
  • Substitute almond flour or crushed pork rinds for breadcrumbs for low‑carb.
  • Add cooked shredded chicken or veggies like bell peppers or corn for more flavor.
  • Author: Jennifer
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Nutrition

  • Serving Size: 1 slice
  • Calories: 210
  • Sugar: 3g
  • Sodium: 410mg
  • Fat: 14g
  • Saturated Fat: 6g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 12g
  • Fiber: 2g
  • Protein: 8g
  • Cholesterol: 75mg